Frequencies for first 10,000 rows of p012e007 variable in sf12010860us7 dataset :

  18 and 19 |
      years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,380       93.80       93.80
          1 |        455        4.55       98.35
          2 |         98        0.98       99.33
          3 |         35        0.35       99.68
          4 |         12        0.12       99.80
          5 |          9        0.09       99.89
          6 |          2        0.02       99.91
          7 |          3        0.03       99.94
          9 |          3        0.03       99.97
         10 |          1        0.01       99.98
         12 |          1        0.01       99.99
         19 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 17 Apr 2017